Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5183723 | Colored image on a degradable sheet material and method of formation | Stephan J. W. Platzer, Arthur E. Procter | 1993-02-02 |
| 5100757 | Method for forming a colored image on a degradable sheet material | Stephan J. W. Platzer, Arthur E. Proctor | 1992-03-31 |
| 4929532 | Diazo negative color proofing process utilizing acrylic/acrylate polymers | — | 1990-05-29 |
| 4533620 | Light sensitive co-condensates | John E. Walls | 1985-08-06 |
| 4416972 | Electrolytic graining of aluminum with nitric and boric acids | John E. Walls, Robert L. Dragon | 1983-11-22 |
| 4414311 | Cathodic deposition of light sensitive components | John E. Walls | 1983-11-08 |
| 4336113 | Electrolytic graining of aluminum with hydrogen peroxide and nitric or hydrochloric acid | John E. Walls, Robert L. Dragon | 1982-06-22 |